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Terremoto moderado mag. 4.4 - Gunma, 46 km ESE of Tōkamachi, Niigata, Japan, domingo, 18 jul 2021 18:50 (GMT +9) -

Terremoto moderado mag. 4.4 - Gunma, 46 km ESE of Tōkamachi, Niigata, Japan, domingo, 18 jul 2021 18:50 (GMT +9) Terremoto moderado mag. 4.4 - Gunma, 46 km ESE of Tōkamachi, Niigata, Japan, domingo, 18 jul 2021 18:50 (GMT +9)

Terremoto moderado magnitud 4.4 a 3.7 km de profundidad

18 Jul 09:54 UTC: Primero en informar: VolcanoDiscovery después de 4 minutos.
18 Jul 09:57: Ahora usando una nueva fuente de datos: NIED
Update Sun, 18 Jul 2021, 10:03

Magnitude 4.4 earthquake strikes near Numata, Gunma, Japan

4.4 quake 18 Jul 6:50 pm (GMT +9)
4.4 quake 18 Jul 6:50 pm (GMT +9)
Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) reported a magnitude 4.4 quake in Japan near Numata, Gunma, only 13 minutes ago. The earthquake hit early evening on Sunday 18 July 2021 at 6:50 pm local time at a very shallow depth of 3.7 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.7.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Shiozawa (pop. 20,200) located 38 km from the epicenter, Nikkō (pop. 16,000) 45 km away, Tōkamachi (pop. 41,100) 46 km away, Numata (pop. 45,500) 49 km away, and Imaichi (pop. 64,300) 51 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Nagaoka (pop. 195,300) located 59 km from the epicenter, Kanuma (pop. 94,900) 68 km away, and Maebashi (pop. 282,700) 73 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Detalles del terremoto

Fecha y hora18 Jul 2021 09:50:07 UTC -
Hora local en el epicentrodomingo, 18 jul 2021 18:50 (GMT +9)
Prof.3.7 km
Epicentro latitud / longitud37.04°N / 139.272°E (Prefectura de Gunma, Japón)
Antipode37.04°S / 40.728°W
Intensidad del temblorTemblor moderado cerca del epicentro
Sentido1 informe
Fuente primaria de datosNIED (National Research Institute for Earth Science and Disaster Resilience)
Volcán mas cercanoHiuchi (10 km / 6 mi)
Lugares cercanos38 km al E de Shiozawa (Minamiuonuma, Niigata) (pop: 20,200) | En el mapa | Sismos cercanos
45 km al NO de Nikkō (Nikko, Tochigi) (pop: 16,000) | En el mapa | Sismos cercanos
46 km al ESE de Tōkamachi (Niigata) (pop: 41,100) | En el mapa | Sismos cercanos
49 km al NNE de Numata (pop: 45,500) | En el mapa | Sismos cercanos
51 km al NO de Imaichi (Tochigi) (pop: 64,300) | En el mapa | Sismos cercanos
59 km al SE de Nagaoka (Niigata) (pop: 195,300) | En el mapa | Sismos cercanos
68 km al NO de Kanuma (Tochigi) (pop: 94,900) | En el mapa | Sismos cercanos
73 km al NNE de Maebashi (pop: 282,700) | En el mapa | Sismos cercanos
131 km al NNO de Saitama (pop: 1,193,400) | En el mapa | Sismos cercanos
155 km al NNO de Tokio (Tokyo) (pop: 8,336,600) | En el mapa | Sismos cercanos
Tiempo en el epicentro en el momento del sismoLight Rain 23.8°C (75 F), humidity: 90%, wind: 1 m/s (2 kts) from S
Energía sísmica estimada liberada2.5 x 1011 joules (69.8 MWh, equivalente a 60 toneladas de TNT) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
4.610 kmEastern Honshu, JapanGFZ
4.610 km29 Km ESE of Muikamachi, JapanUSGS


Seismic station: Matsushiro, Japan (MAJO/IU network) | Distance from quake: 110 km / 68 mi | Show on map | Station Info
Seismic station Matsushiro, Japan: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Marcar como inapropiado.
Mark as helpful or interesting.
Send your own user report!
Fussa Japan (143.2 km S of epicenter) [Map] / Very weak shaking (MMI II) : I was sitting on the couch, I am on the 9th foot and the couch felt like it shook. Like a wobble feeling  

Earlier earthquakes in the same area

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